Unable to cache certain files, 404 error

Issue description:

Symfonium produces an HTTP 404 error for certain audio files hosted on a Plex server. I can directly stream them, but when I try to cache for offline they consistently provide a 404 error. Other audio files with the same format on the same server can cache correctly.

Logs:

Upload description: Unable to cache certain files

Additional information:

 
Same file can be exported to my phone’s download folder just not cached by the app.
Other m4a files on the server can be cached successfully.
 

Reproduction steps:

 
Use search tool to locate file, example was “Project Hail Mary”
Select ‘Offline cache and download’ and ‘Add to permanent cache’
Go to ‘Manage offline files’ ‘Download queue’ and see http 404 error .
 

Media provider:

Plex

Screenshots:

 

    

It’s the server generating those errors.

Most probable cause is that you moved some files or Plex changed IDs and you just need to force a sync.

Else you need to check the server logs to see why it returns 404 error.

Thank you Tolriq, that was definitely the case and I was able to re-sync Plex and it cached successfully.